The Microsoft Active Directory contains the contact information of all employees of a company. Users and contacts can be synchronized by messageconcept PeopleSync to your Mac OS X Addressbook and other devices. PeopleSync is able to fetch names, addresses, phone numbers, email addresses and even profile pictures from the AD objects. It is possible to connect PeopleSync to one or multiple Active Directories.

The Apple Mac OS X operating system comes with several applications for Mail, Contacts and Calendar. The apps support the synchronization with several consumer and corporate email systems. With messageconcept PeopleSync and the native CardDAV support of Mac OS X a synchronization with Active Directory and other systems to the Mac is also possible. This makes contact data from these sources available in the Mail app and all other applications, relaying on the Mac OS X Addressbook.